State-significant development (SSD, NSW)
SSD is the NSW DA category for development of state significance. Assessed by the Minister via DPHI, not council. Above designated; EIS required.
Ask Chalkline about this →State-significant development (SSD) is the NSW DA category for development of state significance under EP&A Act 1979 s.5.1, assessed by the Department of Planning, Housing and Infrastructure (DPHI) and ultimately approved by the Minister for Planning rather than the local council. SSD sits above designated development in the NSW DA notification spectrum and is reserved for projects of state-level importance. The list of SSD types is set in SEPP (Planning Systems) 2021. SSD requires an Environmental Impact Statement (EIS) and extensive public consultation. Most residential builders never encounter SSD, but the category defines the top of the NSW DA pyramid. Verified per EP&A Act 1979 s.5.1 and SEPP (Planning Systems) 2021 (2026-05-23).
The NSW DA pyramid
| Category | Assessor | Public participation |
|---|---|---|
| Exempt development | None | None |
| CDC | Private/council certifier | None |
| Standard local DA | Council | 14-day notification |
| Advertised development | Council | 28-day notification |
| Designated development | Council/JRPP | 28-day notification + third-party appeals |
| State-significant development (SSD) | Minister via DPHI | 28+ day notification + third-party appeals + EIS |
| State-significant infrastructure (SSI) | Minister | Similar to SSD |
SSD sits at the top: the most procedurally heavyweight DA category for development not classified as infrastructure.
Types of SSD
SEPP (Planning Systems) 2021 lists SSD types, including:
| Category | Examples |
|---|---|
| Major residential | Subdivisions over 250 lots; major retirement villages |
| Major commercial | Office towers; shopping centres; mixed-use |
| Major industrial | Power stations; major mining; cement plants |
| Major infrastructure (residential-related) | Water, sewerage, power for major residential precincts |
| Heritage | Some heritage-significant projects |
| Specific named projects | Listed in SEPP, e.g. specific resort or tourism developments |
| Sub-categories | Capital investment value thresholds (typically $30M+, $100M+, $500M+) |
For typical residential builders, only very large subdivision projects would trigger SSD. Standard residential builder is far below the threshold.
SSD vs designated development
| Aspect | SSD | Designated development |
|---|---|---|
| Assessor | Minister (via DPHI) | Council/JRPP |
| Approval | Minister’s decision | Council/JRPP decision |
| Statutory basis | EP&A Act s.5.1 + SEPP Planning Systems | EP&A Act s.4.18 + EP&A Reg 2021 Sch 3 |
| EIS | Mandatory | Mandatory |
| Public exhibition | 28-60 days typical | 28 days |
| Third-party appeals | Sometimes (specific situations) | Yes |
| Timeline | 2-5+ years for complex projects | 8-18 months typical |
| Cost (EIS + DA) | $500k-$10M+ for major | $60k-$600k+ |
SSD is significantly more onerous; SSD projects are typically major capital-investment developments that justify the cost.
SSD process
- Pre-application engagement with DPHI: scoping, consultation, identifying the issues.
- Director-General’s requirements (DGRs): specific scope of the EIS issued by DPHI.
- EIS preparation: 12-24 months typical for complex SSD.
- EIS lodgement and public exhibition: 28-60 days typical.
- Submissions analysis: review of public submissions.
- Response to submissions: amendments to the EIS or design.
- Determination: by the Minister, the Planning Secretary, or the Independent Planning Commission (IPC).
- Conditions of consent: detailed conditions for construction.
- Construction certificate: similar to standard CC but with additional state-level oversight.
Decision-maker variations
| Decision authority | Triggered for |
|---|---|
| Minister for Planning | Most SSD; politically sensitive matters |
| Independent Planning Commission (IPC) | Some controversial SSDs where the Minister wants an independent decision |
| Planning Secretary | Some delegated SSD categories |
| Land and Environment Court (LEC) | On appeal |
Special procedural features
| Feature | Detail |
|---|---|
| DGRs (Director-General’s requirements) | DPHI issues specific scope before EIS preparation |
| Strategic Statement of Compliance (SSoC) | Applicant statement that proposal meets state policy |
| State significance test | Project must demonstrably be of state significance |
| Bilateral assessment under EPBC Act | NSW EIS can satisfy Federal requirements |
| Major Hazard Facilities Regulation | Additional safety requirements for certain SSDs |
| Public hearings | IPC commonly holds public hearings for controversial matters |
Cost and timeline
| Phase | Cost (typical SSD) | Time |
|---|---|---|
| Pre-application engagement | $20k-$100k | 6-12 months |
| EIS preparation | $200k-$5M+ | 12-24 months |
| Public exhibition + submissions | $30k-$200k | 3-6 months |
| Submissions response | $50k-$500k | 3-6 months |
| Determination | (Included) | 3-12 months |
| Total | $300k-$5.8M+ | 2-5+ years |
For major residential SSD (1000+ lot subdivision), costs are at the higher end.
SSD-specific concerns for residential
The few residential SSD types include:
| Type | Trigger |
|---|---|
| Major subdivision (250+ lots) | Capital investment value threshold |
| Major retirement village | Number of dwellings + capital value |
| Major mixed-use | Floor area + capital value |
| Significant heritage residential | Cultural significance |
A small residential builder will not encounter SSD; the projects are billion-dollar deals.
Cross-state equivalents
| State | Equivalent category |
|---|---|
| NSW | State-significant development (SSD) (this) |
| VIC | Project of state significance, Major Projects under EE Act 1978 / Planning and Environment Act 1987 |
| QLD | State Development Coordinator-General-led project under State Development Act 1971 |
| WA | Major project under Planning and Development Act 2005 |
| SA | State significant development under PDI Act 2016 |
| TAS | Major Project Notice under LUPAA 1993 |
| NT | State-Significant Project |
| ACT | National-significance categories |
Builder takeaway
- For residential builders working on standard projects, SSD is irrelevant. Don’t conflate “significant” with SSD.
- If working on a project at SSD scale ($30M+ or major subdivision), engage SSD-experienced consultants and legal team at concept stage.
- The timeline is years, not months. Plan financing and project economics accordingly.
- SSD approval is the Minister’s decision, not a routine planning decision.
- The IPC pathway is available for politically-sensitive SSDs.
Also known as
State-significant development; SSD; state-significant project (informal); Minister’s project; SEPP Planning Systems SSD.
Category: Approvals & DA.
Related
See also
Last updated: 2026-05-23. Verified: 2026-05-23. Quarterly review for currency.